Finding the Fourth Proportional to 12,939.96, 19,393.68 and 5,535.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,939.96 : 19,393.68 = 5,535.72 : x
2. Step 2: Convert to fraction form
   12,939.96/19,393.68 = 5,535.72/x
3. Step 3: Cross multiply
   12,939.96x = 19,393.68 × 5,535.72
4. Step 4: Simplify right side
   12,939.96x = 107,357,982.25
5. Step 5: Solve for x
   x = 107,357,982.25/12,939.96
6. Step 6: Final answer
   x = 8,296.62